Lecture
This lecture discusses the influence of temperature on the equilibrium constant of a chemical reaction, focusing on the reaction of fumarate in the presence of water in equilibrium with malate. By analyzing the qualitative interpretation and answering whether the reaction is endothermic or exothermic, the instructor explains the relationship between temperature, equilibrium constant, and enthalpy. Through the application of the Le Chatelier's principle and the van 't Hoff equation, the lecture demonstrates how to determine the change in free enthalpy at different temperatures and calculate the equilibrium constant. The instructor also illustrates how to extract the enthalpy change from experimental data and use it to predict the direction and nature of the reaction.